... roller100mmDriving modeTwo oil cylinders respectively control two lower rollers, Hydraulic motor driven gearbox, 3 roller linkage moving.Working modeNC, hydraulic ... up and down, the fixing shaft is driven by Variable Frequency Motor, and the two lower shafts is driven by Hydraulic ... up and down, the fixing shaft is driven by Variable Frequency Motor, and the two lower shafts is driven by Hydraulic ...